Improvement in rolls for crushing and pulverizing-machines



` f newlines. BLAKE To all lwhom it mayconcera Beit known that I,"E D WA.RD S. BLAKE, of Pitts: burg, in the county of Allegheny and State ofPenn- Sylvania, have invented a new and useful Improvementin Rolls forCrushing andPulverizing-Machines; R and Ir d o hereby declare that thefollowing is a'fulland. exact description thereof, reference being hadtothe accompanying.drawiugand to the letters of "reference imarkedthereon;- i i The nature of `1 uy invention consists iu themet-bod hereinafterdeseribedfor fitting and securing' a detachedsurfaceou the body or axis of the `rolls of crushingorpnlveriziiigmachines.v

To enable `others skilled inthe art `to make and use luy invention, Iwiltproceedto describe moreffully its construction.

'In the `accompanying di "my'speciicationl i i i Figure lisa side viewof a. roll of a'crusllng and `pulverizingruachine,1 s aidrollf` beingprovided with a detachable surface. a y `lf`igure2 is a longitudinalsection of the same when vtut through-at liney ofig.- `1 A Figure 3 isaltransverse section oft-he sinne when ja\vin g,g which forms part ofcut through at liney' of fig. 2. t

` Figure 4is a transverse section ofthe axis or'body of thcroll atliney. f 'i M Figure 5isa transverse section of the filling used forsecuring the detachable surface to theaxis or bodyof the roll at'linea/. Figure 6 isla transverse section of the detached surface of the-roll atline yf;

In the accompanying drawing.- i jA represents the axis or body of the."roll.

`1B represents thelliug, which is placedbetween the inner` surface oftliedetached surface() and th'e Taxis or. body A ofthe ro i yDrepresentsa' \key seat, a pai-tief which is made in the ax'is or body AofV the roll, and the other part beugintheiillingB.

' The method of constructing, arranging, and securing the several partstogether are as follows: f The axis o r bodyAof the rolls is placed in aturning-lathe, `and turnedto the desired size.- It is after body A `maybe cast withzthe key-seat'formed by the Steering process, andthe axis orbody A thus made wlnay' befused without `the labor and trouble ofmanipeulatiug and turniugit in a turning-lathe.

` The detached surface G may Ibe cast of hard castiron` or cast-steel,or it may be formed of cast-steel by the forging process, andafterwardsftempered to the desired degree ofvhardness.` A ,t t

The partsl A and G being constructed as described,v

they -arethen arranged concentric to eachother. "The r keyw is placed inthe l ey`seat 'D of lthe axis or body `wardlprovided with thekey-se'atD; or the axis or midline .onrIrTsBURdQ PENNSYLVANIAQ tutefrmntfnt.107,s5s,dat ea'oaober 4, 1870.

\ iMPRovEMEN'r iu .RoLvLsiou eRusI-uNe ANDrPuLvsnlzmemacumrs.

The Schedule referred to in these Lettere` Patent and making part o!thefa'ame A, having the parts 4A and G arranged concentric to each otherin a mold or on a .bloek,`p repared for the purpose of holdingV t-h'eparts A and C in juxtaposition.

' lhe space between the innerwalls o f the detached surface" O and theaxis or body Afis filled withmolten drietal, 'or a melted alloy.VExperiencehasdemonfv strated that zine will be very suitable'for thisfilling,

gea/led, the surplus part of theV filling (the pouring gate, orotherprojecting part or parts, is `cnt away.

lheroll is thenready foruse. v

It will be readily observed that, by. making the axis or body A of theroll of'anniformsize, a shortl maudrel or core could be used for curingout the filling 1 3,

` and thereby t it properly on the axis or body A.

The advantage ofthe hereinbefore described method for fittingand'securing'a detached surface en the rolls of a crushing andpulverizing-machine consists in the saving of labor,- time, and expensein fittingl and sel curing the surface O' on the axis orbody A, 1t beingalmost i |npossible, by the old 1nethod'to vmake a.

close' and proper fit in the joint 4betweeutlle parts C and A I Anotherand .very great ,advantage of ttingthe parts A and O together in themanner hereinbefore f described, consists in avoiding the liability ofthe detached surface breaking when a4 pressure -is brought to bear on itin the crushing process, 'for `it is very apparent that au imperfectjoint Abetween the parts A.

and() will tend to weakness on the part of thedetached surface O, andthat aperfcct joint lwill add to its strength.

' A further advantageof my improvement consists in beng'enabled to fitand Vadjust .the parts Aand C l togetherv with -greatease and facility,and also being enabled to keep ou'hand a supply of detached surfaces,C,- which will perfectly iit tlleaxis or body A,

and which'ma .y"be remov ed` and replacediou with` thegreatest ease andfacility.

and advantages of my improvement,-

What I claimf as of my invention is- The corubinatiou, inthe rollsforcrushing and pnl-` verizing-machines, of the body A and surface C,when secured by'a` filling, B, substantia1ly as herein de'-v scribed,and for the purpose set forth.

' EDW. S. BLAKE.

Witnesses: -l

A. 0. JOHNSTON,

JAMES J .I J onNsToN.

Having thus described the nature, construction,

